Valve structure for explosive engines



May 4 1926. 1,583,177

C. A. RAQUE VALVE STRUCTURE FOR EXPLOSIVE ENGINES Filed Feb. 1, 1922bar/0.177. fia aef Patented May 4, 1926.

PATENT OFFICE.

CHARLES A. RAQUE, OF DENVER, COLORADO.

VALVE STRUCTURE FOR EXPLOSIVE ENGINES..

Application filed February 1, 1922. Serial No. 533,313.

7 '0 all whom it may concern:

Be it known that I, CHARLES A.-RA UE, a

citizen of the United States, and resident of the cit and county ofDenver, State of Colora 0, have invented certain new and usefulImprovements in Valve Structures for Explosive Engines; and I do declarethe following to be a full, clear, and exact de scription of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being bad to theaccompanying draw ings, which form a part of this specification.

The object of this invention is to vide a valve structure for internalcom ustion engines which will eliminate the necessity for grindingvalvesfrom time to time as is required with the common so-called mushroom typeof valve, and which will prevent the seating of particles .of carbon andthe like between the valve parts' i These objects are attained by meansof a reciprocating valve member which is held to a fixed path byaccurate guiding means. Preferably the guiding means is in the form of avalve housing through which gas may.

pass from under the valve and which will take up the force of theexplosion from the head of the valve. In any event the fit or the valvewith said guiding means is substantially gas tight so that a true valvefunction is performed by the valve. I

In the drawings wherein certain embodiments of theinvention aredisclosed;

1 is a vertical section through an engine showing one form of theinvention in elevation in operative position;

Fig. 2 shows the same form partially in elevation and partially insection;

form;

Fig. 3 is a cross section taken on line 3-7-3 of Fig. "2;

Fig. 4 is a view partially inv vertical section and artially inelevation, showing a modified f drm in operative osition;

Fi 5 is a cross section ta en on line 55 of Fig. 4 and showin the valvestructure;

Fig. 6 is a-verticalsection showinga fur-.

ther modification;

Fig. 7 is a perspective view of the valve of Fig. 6.

The drawings disclose in a general way a cylinder block '10 and a head14 of an inter- .within the cap or substantially so.

Fig. 2* is a vertical section of the same gas-receiving chamber 15fedfrom a manifold 16. A valve stem 18, controlled by a spring 20, ismounted in the cylinder block 10 and is operated through a push-rod 22and a cam 24 in the usualmanner.

The present invention resides in the valve member 25 carried by the stem18, and in the casin B in which the valve operates.

and by which it is guided in all its movements and in which it isretained. The valve member or head 25 is provided with one or moreapertures 26- extending from top to bottom therethrough. The casing Bcom prises a base. 27 threaded for screwing into the block 10 and havinga. shoulder which engages the upper portion of block 10 when inoperative position. A pluralityof guiding and positioning fingers 30extend from the base 27 and carr at their outer ends a hood or up 28space from the base 27 by openings 32 between fingers 30. The valvemember 25 when in closed position, Fig. 2, has a an, equally tight'fitwith the inner walls of the cavit '34 within cap 28. When valve 25 is ine eva-ted or open position, Fig. 2, it is positioned Within said cap 28,said valve when entirely open being disposed entirely The incomingexplosive gas may then pass outward between base 27 and the valve andbetween the fingers 30 into the explosion chaniber of the engine. Theapertures 26 in the valve insure equalizing of the. pressure on bothsides of the valve member 25 at all times. When the valve is in theclosed po- In Fi s. 4 and 5, a modified form isdisclosed w ierein thecasing B is more in the from of a plug having a base 35 snugly seated inthe cylinder block 10, fingers 36, and a cap connected with base 35 bysaid fingers 36, said cap being indicated at 38 and threaded into thecylinder head 14 as indicated at 40, a square boss 42 being provided tofacilitate the threading operation so that y the base 35 maybe tightlyseated on the cylinder block. The same used as in the form of t pe ofvalve 25 is l igal and 2, and

' the operation is the same, fuel gas traveling for the valve.

nular guide ring 50 which wor s in a cylinthroughcthe passages 44 incasing B. In the form of Figs. and 6, the cylinder block performs thefunctions of a casing The valve com rises an andrical bore in the block10 and a valve top or head 52 also adapted to work in said bore and"close the same against the passage of curately gas. The top 52 is spaced'iromthe ring by means of gas passages or openings 54 disposed betweenconnecting fingers as shown at 56. The edge of top 52 is comparativelythin as shown at 55' but is at the same time thick enough to insure agood'sealing joint and prevent burning out. The thin edge permits quickpassage of gas inasmuch as the passage is thereby quickly opened oncemovement of the valve has started. The ring 50 and the fingers 56 guidethe valve top 52 during all movements. In this form however the camshaft takes the force of the explosion transmitted to the top of thevalve.

It will be noticed that in all forms, the valve moves with a sort ofshearing operation into closing position so that particles of carbon andthe like are prevented from being positioned between the sealing faces.

It will also be noted that the valve is sealed by engagement ofrelatively sliding faces, and that the common nuisance of frequent valvegrinding is eliminated. All move.

laterally) "from said bore, said. en ine having a chem l1 er forcommunication t rough the open'end of said bore, and a valve reciprosaidpassages.

eeann cable in said casingbore to open and close said v assages. y

2. n combination a valve casing having a bore therein, open at its lnnerend an closed at its outer end, and having gas passages leadinglaterally from said bore, a cavity being provided adjacent said closedend, and a valve member reciprocable in said bore and into said cavityto open and close 3. in combination, a valve casing having a boretherein, open at its-inner end and closed at its outer end, and havingfingers 'forming gas passages leading laterally there through from saidbore, a cavity being provided adjacent said closed end, and a valvemember reciprocable in said bore and movable into said cavity, saidvalve member having an aperture therein from its inner face to its outerface to communicate with said cavity.

4. In combination, an engine having an explosion chamber and agas-receiving chainher, a valve caslng mounted on the engine within saidexplosion chamber and having a gas passage therethrough communicatingwith said explosion chamber, said casing also having a borecommunicating at one end with said gas-receiving chamber and from whichsaid passage leads, and a valve member movable in said bore to open andclose said passage.

' 5. In combination, an engine having an explosion chamber and agas-receiving chamber, a valve casing mounted on the en gine within saidexplosion chamber and having a gas passage therethrou h communieatingwith said explosion c amber, said casing having a bore communicatingwith said gas-receiving chamber at one end and from which said passageleads, said casingbeing closed at the opposite end of said bore andproviding a cavity, and-a'valve mend ber movablein said bore and intosaid cavity whereby said passage is opened and closed. i

In testimony whereof I afiix my signa ture.

